Which of these is not an assumption made while formulating momentum theory for hover and clib of a helicopter?(a) Blade is modeled as an actuator disk(b) Non-uniform loading over the disk(c) Smooth slipstream(d) Slipstream rotation velocity is negligibleI have been asked this question in unit test.I want to ask this question from Momentum Theory topic in portion Helicopter Dynamics of Aerodynamics

Which of these is not an assumption made while formulating momentum th

1.	Which of these is not an assumption made while formulating momentum theory for hover and clib of a helicopter?(a) Blade is modeled as an actuator disk(b) Non-uniform loading over the disk(c) Smooth slipstream(d) Slipstream rotation velocity is negligibleI have been asked this question in unit test.I want to ask this question from Momentum Theory topic in portion Helicopter Dynamics of Aerodynamics
Answer» The correct choice is (b) Non-uniform loading over the disk Easy explanation: There are VARIOUS assumptions made while formulating the momentum theory for the helicopter in hover and climb CONDITION. These are-the BLADES are MODELED to be a thin circular actuator disk, there is uniform loading over the disk, the slipstream is WELL defined, the rotational velocity in the slipstream is neglected and there is uniform induced velocity.

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